1/x=5/(x+3)分式方程 带检验

1/x=5/(x+3)5/5x=5/(x+3)5x=x+35x-x=3x=3/4检验：x=3/4代入,左边得1/(3/4)=4/3右边得5/(3/4+3)=5*4/15=4/3左边=右边所以x=3/4是原方程的解